经典新星爆发中随时间变化的再增亮：一种晚期的偶发性燃料燃烧？
The time-dependent rebrightenings in classical novae outbursts: a late-time episodic fuel burning?
摘要：
相当一部分新星在其光变曲线的下降分支上表现出一系列的再亮。我们使用视觉观测研究这一阶段在几个观察良好的新星。我们发现，这些rebrightenings是孤立的耀斑一样的事件，否则光滑的光变曲线，我们表明，在我们的样本中的大多数新星连续耀斑之间的时间间隔逐渐增加的几何级数; rebrightenings是等距对数时间。我们还发现，在这个意义上说，较慢的新星往往增加的时间间隔更快的速度类的新星之间的rebrightenings的时间增加率之间的相关性。我们把这些重新明亮的信封氢燃烧的不稳定性，我们提到其他情况下，这样的定时模式在天文学和自然科学的一般。
英文摘要：
A significant fraction of novae exhibit a series of rebrightenings on the decline branch of their light curves. We use visual observations to study this phase in several well-observed novae. We find that these rebrightenings are isolated flare-like events on otherwise smooth light curves and we show that in most novae in our sample the time intervals between consecutive flares gradually increase as a geometric series; rebrightenings are equally spaced in logarithmic time. We also find a correlation between the rate of increase in the time between rebrightenings with the speed class of the nova in the sense that slower novae tend to increase the time intervals faster. We attribute these rebrightenings to instabilities in the envelope hydrogen burning and we mention other cases of such timing pattern in astronomy and natural sciences in general.
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